# 125Khz RFID module - UART (Seeed Studio)

**Type:** Product page · **SKU:** SS113990014 · **Brand:** [Seeed Studio](https://core-electronics.com.au/brands/seeed-studio-australia)
**Page:** https://core-electronics.com.au/125khz-rfid-module-uart-seeed-studio.html ([markdown](https://core-electronics.com.au/125khz-rfid-module-uart-seeed-studio.html.md))

One of the coolest part of IoT project must be the identification technology, 125Khz RFID module – UART is the most popular RFID module that produced by...

## Pricing

- **Price:** $25.30 (inc GST) — $23.00 AUD, exc GST
- **Quantity discounts:** 10+ $22.08 (exc GST) · 25+ $21.39 (exc GST)

## Availability & dispatch

- Out of stock — the product page offers email notification when it returns.

## Description

One of the coolest technologies to come out of the IoT explosion is RFID, this module is the most popular RFID module produced by Seeed, By connecting this RFID module to Arduino or Raspberry Pi, you are able to build projects that can be used in office/home security, personal identification, access control, anti-forgery, interactive toys and production control systems or anywhere where short-range identification is needed!

This Module will notify whenever 125khz tag approaches, tag serial number will be send via TX pin. Easy way for a RFID module on MCU projects or PC connnection via any USB-to-UART converter.

![](https://core-electronics.com.au/attachments/localcontent/125KhzUART_87651f2327e.jpg)

### Features

- External antenna support
- Maximum effective distance up to 50mm
- Less than 100ms decoding time
- UART TTL interface
- Supports EM4100-compatible read only or read/write tags
- Built-in external bi-color LED and buzzer driver
- Small outline design
- External antenna included!
 
### Documents and Resources

- Wiki Page

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/1/2/125khz_20uart.jpg)